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Walker 250-23085 Oxygen Sensor - Upstream
Overview of Walker 250-23085 Oxygen Sensor
The Walker 250-23085 oxygen sensor is designed specifically for select Kia and Mazda models, including the Kia Sephia and Mazda Protege. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.
- Heated sensor type for faster response times
- Specific fit for Kia 626, Mazda MX-3, Protege, and Sephia models
- 12.32-inch wiring harness length with 3 wires of 20 gauge
- Threaded mounting type with 18.0 mm thread diameter
- Radiused polygon female connector for secure connection
- Overall length of 15.87 inches for proper installation
Detailed Product Features and Specifications
This oxygen sensor from Walker Products OE is engineered with a 20-gauge wire and a 12.32-inch wiring harness length, providing reliable electrical connectivity. The heated sensor type allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor features a radiused polygon female connector, ensuring a precise and secure fit with the vehicle’s wiring harness. Its threaded mounting type with an 18.0 mm diameter thread guarantees compatibility with the exhaust system of the specified Kia and Mazda models.
Walker Products OE Line Information
The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-23085 oxygen sensor is part of this line, ensuring it matches the performance and durability standards required for Kia and Mazda vehicles. This product line is designed to provide reliable emission control components that integrate seamlessly with the vehicle’s existing systems.
Common Applications and Problem Resolution
- Restores accurate oxygen sensing for proper air-fuel mixture
- Helps resolve check engine light issues related to oxygen sensors
- Improves fuel economy by ensuring efficient combustion
- Reduces harmful emissions by maintaining proper sensor function
- Prevents engine performance problems caused by faulty sensors
Installation Notes and Tips
When installing the Walker 250-23085 oxygen sensor, ensure the vehicle is compatible with the part by verifying the make and model, such as Kia Sephia or Mazda Protege. Use appropriate tools to avoid damaging the threaded mounting. Confirm the connector matches the radiused polygon female type for a secure electrical connection. It is recommended to replace the sensor when the engine is cool to prevent injury and ensure proper torque application.
Quality Assurance and Warranty
Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. While specific warranty details for part number 250-23085 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Kia and Mazda vehicles.
| Brand | Walker |
| Part Number | 250-23085 |
| Position | Walker Products OE, Upstream |
| Connector Gender | Female |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 15.87 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 3 |
| Wiring Harness Length | 12.32 |
This part fits 23 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1999 | Mazda | 626 | 2.0L | L4 | GAS | Upstream | Compatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE |
| 1999 | Mazda | 626 | 2.0L | L4 | GAS | Upstream | California emissions ESV vehicles oxygen sensor; Walker Products OE |
| 1998 | Mazda | 626 | 2.0L | L4 | GAS | Upstream | Compatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE |
| 1998 | Mazda | 626 | 2.0L | L4 | GAS | Upstream | California emissions ESV vehicles oxygen sensor; Walker Products OE |
| 1998 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1998 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1997 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1997 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1997 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1997 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1996 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1996 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1996 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1996 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1995 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | 3-wire upstream oxygen sensor compatible with Bank 1 Sensor 1.; Walker Products OE |
| 1995 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | 3-wire upstream oxygen sensor for bank 1 sensor 1.; Walker Products OE |
| 1995 | Kia | Sephia | 1.6L | L4 | GAS | Upstream | Upstream 3-wire oxygen sensor for Bank 1 Sensor 1; Walker Products OE |
| 1995 | Mazda | MX-3 | 1.6L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1995 | Mazda | MX-3 | 1.6L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1995 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1995 | Mazda | Protege | 1.5L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1994 | Mazda | MX-3 | 1.6L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1994 | Mazda | MX-3 | 1.6L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.